VPN Contivity Client idle timeout doesn't work

[trytheuofcool]

I have a problem on contivity client idle timeout. A client is logged of

automatically if the idle timeout is set under 11 minutes. However, the client keeps

logging on when the idle timeout is set default or over 13 min because

client(172.16.1.11) computer throw a packet every 12 min. to broadcast(172.16.1.255).

contivity 1100 ---- win2000pro.

the packet is:
(packet captured from "ethereal&quot
Protocol : BROSWER
Info : Host Announcement PC504, workstation, server, NT workstation, Potential

Browser

First, I thought it is caused by windows' netbios, then I stopped it, but contivity

client start netbios automatically on windows everytime when a tunnel

established.(from "netstat -a" in command prompt)

and next, I stopped the service "Computer Browser", "workstation", and "messenger".
Also, I changed a registry" to set as "NOT MasterBrowser".
-->HKEY_LOCAL_MACHINE \SYSTEM \CurrentControlSet \Services \Browser \Parameters
-->MaintainServerList == Auto->No

If anybody of you have a same problem(idle timeout(over 13min)doesn't work), and know

a solution, please give me a help.